Antiglare device for vehicle headlights



Jan.

F. RABBIT ANTIGLARE DEVICE FOR VEHICLE HEADLIGHTS Filed Dec. 4 1925Patented Jan. 18, 1927.

UNITED STATES FRANK RABBIT, OF BROOKLYN, MARYLAND.

ANTIGLARE DEVICE F03, VEHICLE HEADLIGHTS.

Application filed December This invention relates to anti-glare devicesfor vehicle head-lights, and includes a attachment, for head-lights ofordinary construction, for modifying or mitigating the glare of suchhead-lights while increasing the forward reach of the greater portion ofthe light that emanates from the light source or bulb.

lmportant objects of this invention are to provide a device of thischaracter which will effectively and efficiently perform the functionsspecified in the foregoing, which is of simple construction so it iscomparatively inexpensive, which can be very quickly and easily attachedand detached to numerous forms and kinds of headlights without the use.of any tool or implement, and which includes a very effective andpractical means for retaining itself in its attached position whileeliminating all rattling or wabbling of the light-bulb and of itself.

Other objects and important features are pointed out or implied in thefollowing details of description, in connection with the accompanyingdrawings in which:

Fig. 1 is a vertical central sectional View through an anti-glare deviceof this improved construction attached to a head-light of well knownconstruction. Fig. 2 is a side elevation of my anti-glare attachmentdetached from the head-light. Fig. 3 is a side elevation of the rear orbase-section detached from the front or projecting section. Fig. i is afront view of the part shown in Fig. 3.

Referring to these drawings in detail, in which similar referencecharacters refer to similar parts in the several views, and in which theordinary headlight comprises or includes a reflector 5, a lamp-socket 6,a lamp or bulb 7 and an ordinary bayonet-slot and stud 8 as thefastening means for the lamps. The attachment for such head-light willnow be described as follows:

A concavoconv ex base member 9 is circular in outline and has a centralopening 10 for receiving the front end of the socket 6. The margin ofthe opening 10 has pliable tongues 11 integral therewith. this member 9being preferably of a blank of sheet metal. pressed into theconcavo-convex shape, and it also formed with integral tongues 12 thatextend from the perimeter of the same and converge with relation to oneanother. The purpose of the tongues 11 is to form fasteners for ahelical compression spring 13,

4:, 1925. Serial No. 73,215.

by bending them over the rear convolution of said spring, as moreclearly shown in Fig. 1. The purpose of the tongues 12 is to formchannels for receiving and holding tongues 14 which are formed on therear or inner margin of the hollow frusto-conical front section orsemi-reflector 15. The opposite edges of the tongues 12 are turnedinward to form such channel, as more clearly seen in Fig. 1. By thismeans of securing the front section 15 to the rear section 9, thesesections can very easily be connected to one another, and in thisconnection, it should be understood that the section 15 is of sheetmetal which is pliable enough to permit the tongues 14 to be bent out atthe proper angle to the axis of the sections 9 and 15, and springyenough to permit the tongues 14 to be inserted in the grooved tongues12, and held therein by the springy action of the section 15. Thesesect-ions may either be of unpolished aluminum, or of other sheet metalcoated with aluminum paint, so all parts thereof (except not essentiallythe rear part of the rear section) have semi-reflecting surfaces.

The spring 13 performs the dual function of holding the bulb 7 againstrattling or wabbling in its socket 6, and cooperating with the lamp orbulb and the fastening means 8 for holding the rear section 9 firmly onits seat so it will not rattle or wabble. To secure the attachment inplace on its seat, the bulb is first removed from the socket 6, the part9 placed on its seat, and the plug of the bulb is then forced throughthe entrance of the socket, against pressure of the spring 13, andturned for locking by means of the bayonet-slot and stud 8, therebysecuring all parts of the invention firmly in the anti-glaring relationto one another.

The operation or effect of the anti-glaring device is as follows:

Since it is seen that the greater part of the bulb is surrounded by thefront section 15 in such relation that very few of the lightrays arepermitted to emanate directly to the full-reflecting or polished orbright surface 5, and in such relation that the light-rays do notemanate directly on the intermediate part of the reflecting surface thatusually produces the dangerously blinding glare, and that the directrays from the light-bulb are most all met and deflected or reflectedfrom the semi-reflecting surface of the section 15. it

is evident that these light rays are softened or mitigated, and at thesame time projected further forward because of the frusto-conical shapeof this front section. It will also be seen that part of the light-raysemanate back to the semi-reflecting surface of the rear section 9, andare reflected thence against the outer semi-reflecting surface of thesection 15, also against the reflecting surface of the reflector 5,thereby diffusing these rays of light and giving ample light along thesides of the road.

No attempt is here made to give a full explanation of all the theoriesof the effects produced, but the inventor has repeatedly tested thedevice at various distances of light-projection, and has found it veryeffectively eliminates the glare that is so objectionable and dangerousto traffic and to the traveling public.

It is not my intention to limit my patent protection to the exactconstruction and arrangement here shown, for the invention issusceptible of various modifications within the scope of the claims.

What I claim as my invention is:

1. In an attachment for a head-light including a reflector; thecombination of a hollow and rearwardly converging front light-reflectivesection having an aperture in its convergent end to receive an electriclight bulb, a concavo-convex rear light-reflective section having acentral aperture therethrough for receiving the plug of said light bulb,this rear section having forwardly extending tongues on its outer edge,and means on the rear part of the rearwardly converging section forsecuring said tongues thereto.

2. In an attachment for a head-light including a reflector, thecombination of a hollow and rearwardly converging front light-refiectivesection having an aperture in its convergent end to receive an electriclight bulb, a concavo-convex rear lightneflective section having acentral aperture therethrough for receiving the plug of said light bulb,the said front section having tongues formed on and extending rear-Wardly from its rear end, and means on said rear section for securingsaid tongues thereto.

3. In an attachment for a head-light including a reflector, thecombination of a hollow and rearwardly converging front light-reflectivesection having an aperture in its convergent end to receive an electriclight bulb, a concavo-convex rear light-refiective section having acentral aperture therethrough for receiving the plug of said light bulb,the said rear section having a set of forwardly extending tongues on itsouter edge, the said front section having a set of rearwardly extendingtongues on its rear end, and means on one set of tongues for removablysecuring the other set of tongues thereto. 1

4. The structure defined by claim 3, the said means including channelson one set of tongues to receive the other set of tongues, one or bothsets of tongues being somewhat springy, and the tongues of each setbeing at an angle to one another, whereby these tongues are removablysecured by their angular relation to one another.

5. In an attachment for a head-light including a reflector and a lampsocket, the combination of a hollow and rearwardly converging frontlight-reflective section having an aperture in its convergent end toreceive an electric light-bulb, a rear light reflective section having acentral aperture thercthrough for receiving the plug of said light-bulb,means extending from said rear section to said front section forsupporting the latter in position around an electric light bulb, and ahelical compression spring secured around said aperture of the rearsection and adapted to receive said plug and being effective toremovably secure said plug in said lamp-socket.

6. An anti-glare device including a hollow front section offrusto-conical shape and having both inner and outer surfaces of asemi-reflecting character, a rear section which is circular andconcave-convex and formed with tongues having channels therein, thefront section having tongues on its smaller rear end to enter saidchannels for securing the front section to the rear section in spacedrelat on, the rear section being of a greater diameter than the rear endof the front section, the rear section having a central opening and provded with a helical compression spring secured thereto at the margin ofsaid opening and surrounding the opening, whereby the antiglare devicecan be secured in a head-light in the manner shown, for the purposespecitied.

In testimony whereof I aiiix my signature.

FRANK ltlt)

